With a fully chromatic, 25 key piano range and 12 bass buttons. Offers a full, two octave range with Musette tuning. Two rows of six bass buttons include the notes C, G, D, A, F, and Bb on one row, with the same note chords on the second row. Includes a hardshell case and strap. Instrument measures: 12-1/2" high, 13-1/2" wide, 7" deep. Weight 16.25 pounds / 7.4 kg (includes case). Accordion weight 9-1/4lb, keyboard width 11-3/4".